Home / 39,394.22-54,364.01-21,489.21

Finding the Fourth Proportional to 39,394.22, 54,364.01 and 21,489.21

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Solution

The fourth proportional to 39,394.22, 54,364.01 and 21,489.21 is: 29,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,394.22 : 54,364.01 = 21,489.21 : x
  2. Step 2: Convert to fraction form
    39,394.22/54,364.01 = 21,489.21/x
  3. Step 3: Cross multiply
    39,394.22x = 54,364.01 × 21,489.21
  4. Step 4: Simplify right side
    39,394.22x = 1,168,239,519.89
  5. Step 5: Solve for x
    x = 1,168,239,519.89/39,394.22
  6. Step 6: Final answer
    x = 29,655.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.